School officials said the girls were struck about 8 a.m. in front of the Ledge Street School. Students were being dropped off for school, and there were just three cars left.

"As the two front cars pulled away, it looked as if the third car in row just accelerated," said assistant superintendent Karen Crebase.

The two girls were in the crosswalk with a parent.

"Both children appeared alert," Crebase said. "They were talking and were up walking around."

Crebase said the driver was a 44-year-old mother dropping off her child at the elementary school.

Police said they examined the driver's phone to see if she was using it at the time, but she wasn't. Drugs and alcohol were also not factors. Police said no charges will be filed.

"Both parents that were dropping off that were in front of the car that lost control were following protocol," Crebase said. "They waited in line. They dropped their children on the sidewalk. The parents that were crossing the street with their children were with them and were in the crosswalk."

Crebase said everyone is grateful the children weren't seriously injured.

"It was a startling start to the school morning," she said. "Fortunately, we've had a positive outcome."

A structural engineer has examined the brick pillar that was struck and determined that the building was safe.